One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,8)(5,6)(9,10)(11,13)(12,14)(15,16)(17,18)(19,24)(20,33)(21,26)(22,27)(23,28)(25,30)(29,43)(31,41)(32,42)(34,40)(35,48)(36,45)(37,46)(38,47)(39,44) involution — undirected(2,6)(7,8)(9,11)(10,13)(12,15)(14,16)(17,19,22,31)(18,24,27,41)(20,34,30,29)(21,36,38,35)(23,39,37,32)(25,43,33,40)(26,45,47,48)(28,44,46,42)(1,3,5,4)(2,7,6,8)(10,14)(11,15)(17,20)(18,25)(19,29)(21,32)(22,30)(23,35)(24,40)(26,44)(27,33)(28,45)(31,34)(36,37)(38,39)(41,43)(42,47)(46,48)(1,4,5,3)(2,8,6,7)(10,14)(13,16)(17,21,37,29,22,38,23,34)(18,26,46,43,27,47,28,40)(19,30,39,35,31,20,32,36)(24,25,44,48,41,33,42,45)(2,6)(7,8)(20,30)(21,38)(25,33)(26,47)(29,34)(35,36)(40,43)(45,48) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.